Horizontal numerical control key milling machine
By designing a horizontal CNC milling key machine, the feeding mechanism and locking mechanism of the ball screw is driven by the servo motor, the problem of insufficient rigidity when the vertical milling machine is processed for longer workpieces is solved, and the machining accuracy and efficiency are improved.
Patent Information
- Application Number
- CN202421981163.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-15
AI Technical Summary
When processing longer and larger workpieces on vertical milling machines, the workpiece moves with the bed, resulting in insufficient rigidity, vibration, and affecting the processing accuracy and speed.
A horizontal CNC milling key machine is designed, with the countertop located on the bed, and a servo motor drives the feed mechanism of the ball screw, combining the locking mechanism and the clamping part to ensure that the workpiece does not move with the bed during processing.
Improves the rigidity during processing, enhances the processing accuracy, and improves the keyway processing efficiency by increasing the feed speed.
Smart Images
Figure CN223044173U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of milling machine processing, in particular to a horizontal numerically controlled milling key machine. Background Art
[0002] At present, the keyway milling of shaft parts is carried out on a vertical milling machine. The part is fixed on the milling machine body, and the keyway of the part is processed by a milling power head. In this way of processing the keyway on a vertical milling machine, the milling power head does not move, and the machine body moves in three spatial directions of X, Y, and Z. When processing a long and large workpiece, since the workpiece moves with the machine body, it will cause insufficient rigidity, and then generate vibration, affecting the processing accuracy and speed.
[0003] Therefore, a horizontal numerically controlled milling key machine is needed to solve the above problems. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a horizontal numerically controlled milling key machine for the deficiencies of the prior art, which includes a machine body, a table, a center tailstock, a clamping part, a power head, a feeding mechanism, a locking mechanism, a table guide rail, a positioning plate, and a digital display screen. The table is located above the machine body, and a table guide rail is arranged on the table. Along the direction of the table guide rail, a locking mechanism, a clamping part, a positioning plate, a center tailstock, and a digital display screen are arranged in sequence; the clamping part is arranged above the table guide rail; the feeding mechanism is arranged outside the table and is vertically distributed on the same horizontal plane as the table guide rail. The power head is arranged directly above the feeding mechanism. The locking mechanism is arranged on one side of the table guide rail and is connected to the clamping part;
[0005] The clamping part includes a three-jaw chuck and a chuck holder; among them, the three-jaw chuck is installed on the chuck holder, and the chuck holder is arranged on the second slider.
[0006] The feeding mechanism includes a servo motor, a fixed support seat, a ball screw, a connecting platform, a nut seat, a ball nut, a free support seat, a linear guide rail, and a first slider; among them, two linear guide rails are arranged in parallel on the connecting platform, and a first slider is arranged on the linear guide rail. A servo motor, a fixed support seat, a ball screw, a nut seat, a ball nut, and a free support seat are connected in sequence along the feeding direction in the middle of the two linear guide rails.
[0007] The locking mechanism includes a positioning block, an eccentric shaft, a clamping block, a clamping shaft, and a pin; among them, the positioning block is installed on the chuck holder, a through hole is opened on the positioning block, one end of the clamping shaft is fixed in the through hole, and two symmetrical clamping blocks are arranged at the other end; the pin passes through the two clamping blocks, and an eccentric shaft is connected to the end of the pin; the lower end of the clamping block is clamped in the groove of the table guide rail.
[0008] The beneficial effects of the utility model are as follows:
[0009] 1. The power feed mechanism adopts the form of a servo motor driving a ball screw, which can greatly improve the feed speed and thus enhance the keyway processing efficiency.
[0010] 2. When machining long and large workpieces, the workpiece does not need to move with the bed surface, which can improve the rigidity during machining and thus enhance the machining accuracy.
[0011] 3. By using a numerical control system to control the servo motor and inputting corresponding parameters, it is possible to quickly switch between keyways of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 is the overall schematic diagram of the horizontal numerical control key milling machine of the present utility model.
[0013] Figure 2 is the structural diagram of the feed mechanism.
[0014] Figure 3 is the structural diagram of the connecting platform.
[0015] Figure 4 is the structural diagram of the clamping part.
[0016] Figure 5 is the structural diagram of the locking mechanism.
[0017] Figure 6 is the cross-sectional view of the locking mechanism.
[0018] Figure 7 is the schematic diagram of the keyway processing principle. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] The present utility model provides a horizontal numerical control key milling machine. The following further describes the present utility model in conjunction with the drawings and specific embodiments.
[0020] Figure 1 is the overall schematic diagram of the horizontal numerical control key milling machine of the present utility model. The horizontal numerical control key milling machine includes: a bed 1, a table 2, a center tailstock 3, a clamping part 4, a power head 5, a feed mechanism 6, a locking mechanism 7, a table guide rail 8, a positioning plate 9, and a digital display screen 10. The table 2 is located above the bed 1. A table guide rail 8 is provided on the table 2. Along the direction of the table guide rail 8, a locking mechanism 7, a clamping part 4, a positioning plate 9, a center tailstock 3, and a digital display screen 10 are sequentially arranged; the clamping part 4 is provided above the table guide rail 8; the feed mechanism 6 is provided outside the table 2 and is vertically distributed on the same horizontal plane as the table guide rail 8. The power head 5 is provided directly above the feed mechanism 6. The locking mechanism 7 is provided on one side of the table guide rail 8 and is connected to the clamping part 4.
[0021] Figure 2It is the structural diagram of the feeding mechanism. This mechanism can be set in two directions of X (key length) and Y (key depth). Taking the Y direction as an example, it includes a servo motor 61, a fixed support base 62, a ball screw 63, a connecting platform 64, a nut seat 65, a ball nut 66, a free support base 67, a linear guide 68, and a first slider 69. Among them, the connecting platform 64 is vertically connected to the tabletop 2. Two linear guides 68 are arranged in parallel on the connecting platform 64, and a first slider 69 is provided on the linear guide 68. There are a servo motor 61, a fixed support base 62, a ball screw 63, a nut seat 65, a ball nut 66, and a free support base 67 connected in sequence along the feeding direction in the middle of the two linear guides 68. The servo motor 61 provides power during feeding, and the X direction structure is the same as that of the Y direction. The connecting platform 64 connects the X and Y feeding mechanisms together, as Figure 3 shown.
[0022] Figure 4 It is the structural diagram of the clamping part. The three-jaw chuck 41 is installed on the chuck holder 42, and the chuck holder 42 is installed on the second slider 82. The second slider 82 can move along the tabletop guide 8, which plays a role of adjustable length support when processing workpieces of different lengths.
[0023] Figure 5 , Figure 6 They are respectively the structural diagram and cross-sectional view of the locking mechanism. The positioning block 71 is installed on the chuck holder 42. A through hole is opened on the positioning block 71. One end of the clamping shaft 74 is fixed in the through hole, and the other end is provided with two symmetrical clamping blocks 73. The pin 75 passes through the two clamping blocks 73, and an eccentric shaft 72 is connected to the end of the pin 75. The lower end of the clamping block 73 is clamped in the groove of the tabletop guide 8, and tightening the wrench of the eccentric shaft 72 downward can lock the whole structure.
[0024] Figure 7 It is the schematic diagram of keyway processing. The positioning surface is the zero point in the X direction during processing, and the center of the workpiece diameter is the zero point in the Y direction. Select tools with different diameters according to different key widths T, then set the tool with the positioning surface as the zero point. Finally, input the distance D, keyway length L, and key depth H at the input end of the digital display screen 10, and start the control feeding mechanism 6 to drive the power head 5 to move in the X and Y directions of the keyway through the digital display screen 10, and the keyway can be processed.
[0025] When the horizontal CNC milling key machine is working, the tabletop 2 does not move, which can improve the rigidity during processing, thereby improving the processing accuracy. The feeding mechanism 6 adopts the form of a servo motor 61 driving a ball screw 63, which can greatly improve the feeding speed, thereby improving the keyway processing efficiency.
Claims
1. A horizontal CNC milling machine, comprising a bed (1), a table (2), a center tailstock (3), a clamping part (4), a power head (5), a feeding mechanism (6), a locking mechanism (7), a table guide rail (8), a positioning plate (9), and a digital display screen (10), wherein the table (2) is located above the bed (1), a table guide rail (8) is arranged on the table (2), and the locking mechanism (7), the clamping part (4), the positioning plate (9), the center tailstock (3), and the digital display screen (10) are arranged in sequence along the direction of the table guide rail (8), and the clamping part (4) is arranged above the table guide rail (8), characterized in that: A feeding mechanism (6) is arranged on the outer side of the table top (2) and is vertically distributed on the same horizontal plane as the table top guide rail (8).
2. The horizontal CNC key milling machine according to claim 1, characterized in that: The power head (5) is arranged directly above the feeding mechanism (6).
3. The horizontal CNC key milling machine according to claim 1 or 2, characterized in that: The locking mechanism (7) is arranged on one side of the tabletop guide rail (8) and is connected to the clamping part (4).
4. The horizontal CNC key milling machine according to claim 1, characterized in that: The clamping part (4) comprises a three-jaw chuck (41) and a chuck frame (42); wherein the three-jaw chuck (41) is mounted on the chuck frame (42), and the chuck frame (42) is arranged on the second slide block (82).
5. The horizontal CNC key milling machine according to claim 1, characterized in that: The feeding mechanism (6) comprises a servo motor (61), a fixed support seat (62), a ball screw (63), a connecting platform (64), a nut seat (65), a ball nut (66), a free support seat (67), a linear guide rail (68), and a first slide block (69); wherein two linear guide rails (68) are arranged in parallel on the connecting platform (64), and a first slide block (69) is arranged on the linear guide rails (68); and between the two linear guide rails (68) there is a servo motor (61), a fixed support seat (62), a ball screw (63), a nut seat (65), a ball nut (66), and a free support seat (67) which are sequentially connected along the feeding direction.
6. The horizontal CNC key milling machine according to claim 1, characterized in that: The locking mechanism (7) comprises a positioning block (71), an eccentric shaft (72), a clamping block (73), a clamping shaft (74), and a pin (75); wherein the positioning block (71) is mounted on the chuck frame (42); a through hole is formed on the positioning block (71); one end of the clamping shaft (74) is fixed in the through hole; and the other end is provided with two symmetrical clamping blocks (73); the pin (75) passes through the two clamping blocks (73), and the end of the pin (75) is connected to the eccentric shaft (72); and the lower end of the clamping block (73) is clamped in the groove of the table guide rail (8).